$(5$ points$)$ In what cases would you prefer to install a "hanging" vs$.$ a "keyed$-$in$"$ slurry wall?

$(5$ points$)$ Describe $($briefly$)$ the stages of slurry cutoff wall construction.

$(5$ points$)$ List the key processes involved in contaminant transport.

$(5$ points$)$ Draw the analogy between Fick's and Darcy's Law.

$(5$ points$)$ Draw the analogy between the Reynolds # and Peclet #$.$

$(25$ points$)$ Results from a tracer test are summarized in the tables below for two levels of

heterogeneity and for a completely homogeneous $($uniform$)$ aquifer.

Using the information presented in the tables, calculate the dispersivity and the macrodispersivity of

the homogeneous and heterogeneous aquifers, respectively.